upper management devises a plan that needs to be implemented worldwide. They simultaneously activate abilities to protect people during the final action to contain the meteorites/monsters. The original main impact seemed to have been in the China region but they had certainly spread over time. They never showed signs of being in contact with other continents before this and they aren't mentioned except for death counts and the insinuation that the people teleported to an unknown (hopefully safe) world was half the planet, not the country. I'm really clueless as to how they managed to implement and succeed at applying weapons to the entire world with such little manpower. Sure it may have been set up before the end of the world, but people would have still needed to maintain it... Maybe the story ends not long after this BECAUSE there is no way the plan could have completely wiped out the threat. The damn rocks can self propagate after all.

From the pov of romantic emotions I find the MC kind of a mess, to be honest. I get it that he is more "reserved" in that respect both because he was raised with duty in mind and the author made him out to be a special clairvoyant of his tribe who inherits the memories of all of his predecessors, however, his actions don't really match the supposed intensity of his feelings.

He held on in the nightmare game for years due to his "love" and wish to see his lover once again, and when he finds out he was replaced and grossly betrayed there's a tiny, tiny spike then the line goes flat again? Okay, he had years to come to terms with what he might face on his return and he truly only wanted to see the man again, but still... That's not really love...

Then there's our ML whom, if not for his dedicated feelings, I'd have wished to transplant from the story because he deserved better.

Everything else has a long buildup so any kind of romantic "development" between the leads is late stage, as in maybe late 70s, c80, c82, and c90—at least those are what I can somewhat recall although I wouldn't dare to vouch for 100% accuracy—out of 91 chapters. But I'm using development here very loosely as all of those are the ML's one-sided efforts or outbursts due to him getting zero feedback from the MC on where he stands, and outside of those brief moments we are all business. Then in the closing chapter we finally get the confession of the century and the relationship confirmation since nothing screams love like telling your man that you weren't willing to say you had feelings for him before running off to commit su*cide with another due to fear of not coming back and always making him lower than your very last priority beforehand. I hope my sarcasm is apparent and this is why I'm saying they lack chemistry: MC shows a lot more care toward others while ML is taken for granted or ignored by him.

As far as I'm concerned, ML's tender affections only exist so author and an important side character would have a super OP, willing s*ave, and that the humanity saving scheme would succeed with MC alive after it. The finishing touch of MC finally responding to ML's feelings in a positive manner added just so it can be called a happy ending.